From 3e17f04b4ca9267e7889cdfbb86803686baabc75 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9C=A8=E6=9D=89?= <zhmushan@qq.com>
Date: Sun, 21 Nov 2021 23:59:03 +0800
Subject: [PATCH] fix `parent_component is undefined`

---
 src/runtime/internal/Component.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/runtime/internal/Component.ts b/src/runtime/internal/Component.ts
index 3e4801054757..ef6be19eff06 100644
--- a/src/runtime/internal/Component.ts
+++ b/src/runtime/internal/Component.ts
@@ -38,7 +38,7 @@ interface T$$ {
 	on_destroy: any[];
 	skip_bound: boolean;
 	on_disconnect: any[];
-	root:Element | ShadowRoot
+	root: Element | ShadowRoot
 }
 
 export function bind(component, name, callback) {
@@ -130,7 +130,7 @@ export function init(component, options, instance, create_fragment, not_equal, p
 		callbacks: blank_object(),
 		dirty,
 		skip_bound: false,
-		root: options.target || parent_component.$$.root
+		root: options.target || parent_component?.$$.root
 	};
 
 	append_styles && append_styles($$.root);